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研究表明，液压系统故障的起因至少75％以上是由于液压油的污染造成的。控制液压系统中油液的污染，除了要求系统中具备性能优良的过滤装置以外，重要的是在设备的使用管理上要采取防污染的控制措施，并应贯穿于设备使用的全过程。笔者认为，提高工程机械液压系统清洁度主要有
Studies have shown that at least 75% of the hydraulic system failure is caused by hydraulic oil contamination. Control of oil pollution in the hydraulic system, in addition to require the system with excellent performance of the filter device, it is important to use the equipment to take pollution control measures to be taken, and should run through the entire process of equipment. The author believes that to improve the hydraulic system of construction machinery are mainly cleanliness